🔴PEMERIKSAAN BERAT JENIS URINE⁉️

Summary

This video demonstrates the process of measuring the specific gravity of urine using two methods: the urinometer and the refractometer. It begins with the preparation of the urine sample and equipment, including a beaker, pipette, and measuring cup. The urinometer is carefully placed in the sample, and the reading is taken. For the refractometer, a small amount of urine is placed on the device's blue surface, and the result is observed through the lens. The video highlights the importance of avoiding air bubbles and ensures accurate readings by focusing on the meniscus and measurement scales.

Takeaways

• 😀 The objective of the experiment is to determine the specific gravity of urine.
• 😀 The required materials include urine samples, refractometer, urinometer, measuring cylinder, pipette, and beaker.
• 😀 Step 1: Pour the urine sample (20 ml) into a measuring cylinder.
• 😀 Step 2: Remove any air bubbles from the sample to ensure accurate measurement.
• 😀 Step 3: Prepare the urinometer and dry it if necessary with tissue paper.
• 😀 Step 4: Place the urinometer into the measuring cylinder and rotate it carefully.
• 😀 Step 5: Ensure the urinometer does not touch the sides of the cylinder.
• 😀 Step 6: Observe the floating strip on the surface and read the meniscus level.
• 😀 Step 7: The second method involves using a refractometer to measure specific gravity.
• 😀 Step 8: Take the remaining urine sample with a pipette and apply it onto the blue section of the refractometer.
• 😀 Step 9: Avoid air bubbles on the refractometer to prevent measurement interference.
• 😀 Step 10: Read the specific gravity by observing the scale on the refractometer, focusing on the boundary between the blue and white areas.

Q & A

What is the purpose of the specific gravity test for urine?

The purpose of the specific gravity test is to determine the concentration of urine, which helps in assessing the kidney's ability to concentrate or dilute urine.

What are the tools and materials needed for the specific gravity urine test?

The required materials include a urine sample, a refractometer, a urinometer, a graduated cylinder, a pipette, and a beaker.

How should the urine sample be prepared for measurement?

The urine sample should be transferred to a beaker, and 20 ml of urine should be measured in a graduated cylinder. If there are any air bubbles, they should be removed to avoid interference with the measurement.

What is the purpose of drying the urinometer before use?

The urinometer should be dried with tissue to prevent any interference from moisture, ensuring accurate readings.

What precautions should be taken while using the urinometer?

When using the urinometer, it should not touch or rest against the sides of the graduated cylinder. The urinometer should be rotated carefully to avoid errors in the reading.

How is the specific gravity read using the urinometer?

The specific gravity is determined by observing the strip that is raised on the surface of the liquid and reading the meniscus at the appropriate level.

How is the refractometer used to measure the specific gravity of urine?

A small amount of the urine sample is placed on the blue surface of the refractometer. The cover is closed to avoid bubbles, and the scale is read through the lens at the back of the device.

What is the importance of avoiding bubbles when using the refractometer?

Bubbles can interfere with the accuracy of the reading by distorting the measurement, so it's important to avoid them during the process.

What scale should be observed in the refractometer?

The scale to be observed is the one that shows the interface between the blue and white sections, specifically the line marked 'urine gravity' which indicates the specific gravity measurement.

What is the role of the pipette in the refractometer test?

The pipette is used to transfer the urine sample onto the refractometer's blue surface for testing, ensuring precise and clean placement of the sample.